[Bugme-new] [Bug 21222] New: Bluetooth high pitch noise Broadcom 4353

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=21222

           Summary: Bluetooth high pitch noise Broadcom 4353
           Product: Networking
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
        AssignedTo: acme at ghostprotocols.net
        ReportedBy: lixo1 at hotmail.fr
        Regression: No


The bluetooth card of HP Envy 17, Broadcom coorporation 4353 (wifi+bluetooth)
emits an intermittent high pitch noise, amplified when the CPU is idle, when
the bluetooth kernel module is activated.

On Windows 7 it doesn't produce any kind of noise. 
Deactivating bluetooth kernel module removes the noise.
Maybe a circuit resonance generated by a wrong bluetooth search
frequency/alimentation? 

Tested on kernels 2.6.34 and 2.6.35.

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